Last Updated: Jun 22,2010
I do not know what features / functions are basic 2.1 and what are part of the senseUI.
All the apps/widgets are labeled either htc or android so you can tell which platform runs each
Google. Use it.
Exactly what I was going to post.
Android is a phone operating system, like Windows 7 on a computer. It's made by Google. HTC have taken the default look of Android and added their own 'skin' over the top, and called it the 'Sense UI'.
Separate names with a comma.